When I had COVID, but before I developed symptoms, I tested negative several times with a LFT, before testing positive via PCR the same day. They're generally considered to be more accurate than the lateral flow tests.
Once you've recovered, you're advised not to take a PCR test for 90 days, as they can still pick up traces of the virus in your system and give you a false positive result. Haven't seen anything about lateral flow tests doing the same.
Once you've recovered, you're advised not to take a PCR test for 90 days, as they can still pick up traces of the virus in your system and give you a false positive result. Haven't seen anything about lateral flow tests doing the same.